1311003323124 has 96 divisors (see below), whose sum is σ = 3364254007296. Its totient is φ = 394042682880.

The previous prime is 1311003323117. The next prime is 1311003323137. The reversal of 1311003323124 is 4213233001131.

It is a junction number, because it is equal to n+sod(n) for n = 1311003323094 and 1311003323103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85606092 + ... + 85621404.

It is an arithmetic number, because the mean of its divisors is an integer number (35044312576).

Almost surely, 2^{1311003323124} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1311003323124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1682127003648).

1311003323124 is an abundant number, since it is smaller than the sum of its proper divisors (2053250684172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311003323124 is a wasteful number, since it uses less digits than its factorization.

1311003323124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20565 (or 20563 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1311003323124 its reverse (4213233001131), we get a palindrome (5524236324255).

The spelling of 1311003323124 in words is "one trillion, three hundred eleven billion, three million, three hundred twenty-three thousand, one hundred twenty-four".